Footwear upper



FIG. 1 is left side elevational view of a footwear upper showing our new design;

FIG. 2 is a right side elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a front elevational view thereof; and,

FIG. 5 is a rear elevational view thereof.

The broken line showing of a shoe sole in the Figures is environmental only and forms no part of the claimed design. 

The ornamental design for footwear upper, as shown and described. 